# -*- coding: utf-8 -*-
# @Time    : 2021/10/17 11:31
# @Author  : super

f = open("a.txt", "r", encoding = "utf-8")
f.seek(1,0)
print(f.read())
f.close()

f1 = open("a.txt", "a", encoding = "utf-8")
f1.seek(1,0)
f1.write("code:200")
f1.close()